Draft-rigging construction



G. C. MURRAY.. DRAFT RIGGING CONSTRUCTION.

APPucATmM H11-:D suLY 14, 1911.

lPatented Dee. 7 1920.

3 SHEETS-SHEET I.

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APPLICTION FILED JULY 14, 1917- 1,361,987.

e n ZL@ 2^" GA o. flume/w'.V DRAFT'HIGGING CONSTRUCTION. APPLICATION4FILED JULY l, 1917.

Patented Dec. 7, 1920 sHEETs-SHEET 3.

GEORG-E C. MURRAY, F CHICAG, L'LLINOIS.

DRAFT-BIGGIING GONSTRU'CTION.

heerser.,

Specification of Letters Patent.

Patented Dec. 7, i920.

vpplication filed July 14, 1917. Serial No. 180,535.

To all whom 'it may concern Be it known that'l, Gnonon C. MURRAY, acitizen of the United States, residing at Chicago, in the .county ofCool/r and State of illinois, have invented certain new and usefulImprovements in 'Draft-Rigging Construction, of which the following isav specification. t

Thls invention relates to Improvements in draft rigging construction,and has for its object to provide an improved construction of the typeshown and described in my prior Patent No. 1,224,312, patented May 1,i917.

The principal object of this invention is to provide, in connection withdraft riggii'ig ot that nature, improved front and back draft lugs andto provide an integral rear draft lug and center plate filler casting,also operating to tie the draft sills together.Y

Another Objectis to provide an improved front draft hip; .coacting withan improved draw-bar which, when utilized with the type 'of draftrigging shown and described in the abovementioned patent, will preventor eliminate shearmgor bending actionupon the front cross-key, and meanstdmaintam- 4the draft'links in pro er spaced relation lli? with Vrespectto the dra 't sills.

ibtill another object is to provide front ldraft lugswhich will be ofsuilicient strength .to receive sudden shocks ot greater capacity .thanwill be absorbed by the draft rigging, and capable ofrel-ieving the lreyof bending stresses due to such excess shocks.

Still another object resides in the construction of the rear combinationfollower and ley socket and its relation to the draft lues. l lhese 'andother objects will be more fully forth and described in the followingthe draft rigging lmounted therebetween,

' separate cross tie members are constructed Fig. 6 is a perspective ofa key housing member;

Fig. i' is a perspective of the draw-bar; Fig. 8 is a perspective of oneof the front draft lugs; and n Fig, 9 is a perspective o and connectinglinks.

Like numerals .refer to like elements throughout the drawings, in whichl0 designates the spaced apart draft sills of the car,

f one of the keys the specilic form of which does not form a part ofthis invention, and 2O the draw-bar also mounted between the draft sills10 andl intended to coact with the draft rigging, as will be more fullyexplained. Located be- I 'tween and riveted or otherwise suitablysecured to the draft sills l0 is themember 25- ,shown in perspective inFig. 4--the same comprising, in one, the rear draft lugs and a` centerfiller casting.A The member is provided with a recess or socket 25'nlformed by the cross-channel 25h extending across, between, and throughthe rear draft lugs 25.. Extending between the side sills 25l of themember 25-Which side sills are riveted to the vdraft sills 10m-is thehorizontal flange 25d and the vertical {iange 25, 'which flanges serveto add rigidity and strength. to the structure while permittingsufficient Strength with a minimum of weight. The member 25 is providedwith a socket or aperture 25t for a center pin.

:it has been found in actual use that where with the rear draft lugsmounted between. the draft sills, they must extend baclrwardly asuilicient distance and be secured along said distance to the draftm'lls to resist and provide for the bufng stresses received by the draftrigging and communicated to the rear draft lug. At the same time, lfhave found it advisable to provide a cross tie member for the centerpvinrasting, but this also must extend a sullicient distance in 100either direction from the center-pin socket to take4 up longitudinalstressesand strains and, in present day construction, to providesuihci'ent strength would require an over` lf eliminate thisnecessity-by constructingthe center plate casting and the rear draft'.lug and -c'ross'tie member integral, whereby suiicient riveting lengthis provided in the one member to taire care of the longitudinal 11olapping or interference of the twomembers. 1mi

. cated by numeral and mit the insertion therethrough which extends thekey aperture 30".

shown and described a socket member coacting with the rear draft lugs bywhich all the bufling compression was received from the draft riggingbetween such draft rig ging and the rear draft lugs. There such member,rested upon and against the four rear draft lugs, the forceofcompression was exerted upon the area of the following member, asstated, which contacted with the draft lugs and a comparatively smallarea of such follower member received the entire compression of thebufling stresses. In some instances it was restricted to the area andcontactv of but one or two of the draft lugs, furthen increasingsuchcompression, due to the warping or uneven contact of the followermember. l overcome this objection ,in the present construction byproviding the key housing member indishown lin detail in provided with athrough This vaiember 30 is further provided with a front face orportion 30C or notched as indicated by numeral 30d. Strengthening ribsor flanges 30e extend between the rear of the portion 30c andthe socketportion 30a to insure rigidity and strength. When in assembled relation,as shown in Figs. 1, 2, and-3, the socket portion30a of member 30 fitsinto the cavity or socket 25a of member 25 when in normal position insuch wise that the cut-out portions 301 of member 30 permit theassumption of a position by member 30 whereby the Vfront surface offollower 30c will lie substantially flush with the front face of thedraft lugs 25C, so that the bulling stress transmitted by the rearfollower member 15a of the draft rigging will be transmitted oversubstantially the full'area of the key housing member 30 and the draftlugs 25c in such wise the member 30 compressed between the fol lowermember 15a and the draftlugs 25C, as will be obvious.

A rear cross keyl 35 extends transversely of the draft sills 10 andthrough suitable apertures 10 therein, also through the aperture 30b inthe member 30, the ends projecting on either side of the draft sills 10.One end 352L is downwardly turned to prevent its withdrawal, as showni'n Fig. 9, and the other end is apertured at 35D to perof a headed pin35, a Cotter-pin 35d being utilized therewith to also prevent withdrawalof the key 35 after assembly of they structure.

Fig. 6, this member being rearwardly extending portion 30 cut away atits corners l ing ribs that there will be no portion of,

. The drawbar 20 is provided with a cross aperture 20 extendingtransversely thereof. and partially surrounding said aperture. At thesides of the draw-bar 2() are'flanges 20" of maximum width at theportion nearest the upper end of the draw-bar 2O and tapering down tothe surface ofv the drawf bar as shown in Fig. 7.l A strengthening ribor flange 'x20c extends from the highest portion of the flange 20 to thesurface of the draw-bar to enhance the strength of said flange.

In the form of'draft rigging shown, the coupler butt or draw-barcontacts with a front follower member l0", similar to follower 15, fortransmission of .bulling stresses to such draft rigging as is customary.In suitable apertures in the side sills 10 are mounted the front draftlug members 40, shown in perspective in Fig. 8, and provided withsurface riveting flanges 40a constructed for riveting or suitableattachment to the side sills.A Projecting outwardly from one face of theflanges fit-Otis the flange 40 surrounding the aperture 40 and ofsuflicient size as to ,project some distance through the side sills 10and closely fit the apertures provided therefor in such side sills. Thedraft lugs proper, 40, are formed integral with tl members 40 at top.and bottom thereof at one end, a space 40 being provided therebetween.Strengthenor flanges 40 extend from the draft lug portions 40d to theface of flange 40a. Partially surrounding the aperture 4;()c in 'themember 40 is a. triangular flange 40g extending from the face of flange40 to its maximum inward projectionat one end of the aperture 40, thisflange 40g and the draft lug flanges 40 being'so arranged as to leave aspace between their points of origin at lthe flanges 40 for a purpose tobe hereinafter described. v

A front cross key 35', similar to key 35 and similarly held in place,extends through the apertures in draft lug members 40 and aperture 20Ilin the draw-bar20, projecting a suitable distance on either side of thedraft sills 10, asshown in'Fig. 1, for eX- ample. When properlyassembled, l the flanges or collars 20b of the vdraw-bai" 20 projectaxially along the cross key 35 some distance on either side beyond thetop of anges 40e' of the draft lug members 40, as shown in Fig. 2. When,as frequently occurs in present day freight or passenger hauling, anunusual shock or' compression is transmitted to the draft gearing k15through the medium of coupler draw-bar 20, this shock may be ofsufficient power to compress the draft rigging 15' and transmitconsiderable of4 the shock to the side sills through themedium ofthecross key 35.

i ,seiner tacted s'urface therefor will be providedby the flange 40g;since, when the key 35 is in contact therewith, the Contact of drawbarflanges 20h overlaps the contact of flanges 40, as will be obvious froman examination of Fig. l. A ny bendingfor shearing stress that the keywould be subjected to were such flanges not present, is obviated, and.the key receives substantially only a compression stress which may betaken care .of by suitably designing said key. ln assembling thisstructure the draw-bar S2() is moved into position underneath the sidesills and front d aft lug member 40 in such wise 15 that it can belifted yinto position preliminary to inserting the key 35 therethrough,the spacing of the origin points of flanges 4W and 40g permitting thisliftingand posi tioning movement.

As in the structure of my previous patent, side links or arms @l5 extendbetween the keys 35 and 35' outside of the sills l0, being held thereonagainst accidental remo al bv means of the pins 35C and down-turned ends35 of the keys themselves. These links are aperturcd at front and backas indicated by numeral 45see Fig. 9-these apertures or slots being ofsuch size that when the d 'aft rigging is in normal position, asindicated in 2 and l--in which position' it will fill the space betweenthe front and a'ear i draft lugs-the links will approximately contactwith the' front of the front key 35 and will be slightly out of contactwith the rear of the rear key su'licient to permit the 'necessary amountof coupling travel before the 'draft gear commences to operate, andafter such necessary coupler 'travel has been utilized further pull onthe draw-bar 20 will 40 be transmitted to key 35 on the arms 45 to therear key 35, which in turn will move the follower member 30 forwardly ofthe side sills to compress the'dratt gear. lt is obvious that such arenot suited to 45 receive compression stresses, and since the draft gearreceives bu'ling strains directly from the draw-bar itself, the slotsare made ot' siu'iicient length to permit inward or buflfing travel ofthe front key 35 a distance equal to the. limitof gear travel, at whichlimit key 35 -will contact with the draft lug members l() so that nocompression. or other -stress will be transmitted through the links 45to the rear key will be obvious. l thicken the ends 4:5 of the links orarms 45 around the ends of the slots 45" to provide additional strengthvoutwardly of the keys so to prevent the destruction of said links bywthekeys when pulling strain has been .transmitted therebetween.Furthermore, by constructing' the slots 45 of the same length at eachend of the links 45 they are interchangeable, vand it would beimpossible for ignorant workmen to assemble them in an incorrect manner.

-tially siuround said lugs.

It is highly desirable. to maintain the arms 4:5 in parallel relationwith respect to the direction of their movement and the side sills l0,and also to maintain them out of contact with the heads or rivets, orthe like, utilized to secure the front and rear draft lug members to theside sills. The `projecting flange 40h of the member 40 serves thispurpose at the draw-bar end of the rigging,

and l utilize spacingwashers 50, or the like, surrounding thekey 35 atthe rear end of the rigging, such spacers being located between the linkmembers 45 andthe draft sills 10, as shown in Fig. l.

'lt will. be apparent that my invention is susceptible of modificationsand improve ments, and l do not wish. to be restricted to the form shownand described, except as defined in the appended claims.

What l claim is:

l. ln combination, a coupler having a butt, a removable key housingoperatively attached thereto, a key extending through said housing, anda draft lug carrying member, 'said housing having a surface normallylying substantially flush'with said draft lugs whereby butling shockswill be received jointly by said lugs and housing face.

ln combination, a coupler having a butt, a removable key housingoperatively attached thereto, a key extending through' said housing, anda draft` lug carrying meinber, said housing having a surface normallylying substantially flush with said draft lugs whereby buing shocks willbe received jointly by said lugs and housing face, said face beingrecessed to partially surroundv said lugs.

, 3. ln combination, `a :ouplerhaving a butt, a removable key housingoperativel/y attached thereto, a key extending through said housing, anda draft lug carrying meml ber, said, housing having a surface normallylying substantially flush with said draft lugs whereby buliing shockswill be received jointly by said lugs and housing face, said face beingcut away at itscorners to par- 4. ln combination a. coupler having abutt, a/key extending therethrough, a movable key housing, a keyextending therethrough and operatively attached to said first named key,a draft lug carryingnicmber7 said housing having a surface normallylying substantially flush with said draft lugs, andy draft gear locatedbetween said coupler butt and said housing.

ln combination, draft sills, a coupler having'a butt located betweensaid draft sills, a key extending through said butt and sills andmovable relative to the latter, a draft gearlocated between said sills,means to transmit draft from said' key to said gear, and means carriedby said sills and said coupler butt to prevent shearing of said keyvwhen the latter is at its limit of draft movement.

6. In combination, draft sills, a coupler having a butt located betweensaid draft sills, a key extending through said butt and sills andkmovable relative to the latter, a draft gear located between said sills.means to transmit draft from said key to said gear, and members locatedladjacent the limit of draft travel of said key to provide increasedcontact surface therefor, said coupler butt being provided withoutwardly extending portions engageable with said key and extendingbeyond the inner ends'of said rst named means.

7. In combination, a coupler having a butt, a key extendingtherethrough, a draft gear, means to transmit draft from said key tosaid gear, and means to limit the movement of said key, said`meanscomprising a draft lug carrying member and inwardly projecting portionsengageable by said key, said coupler butt having means coacting withsaid member to prevent shearing of said key. f

L 8. In combination,a Coupler having a butt, a key extendingtherethrough, a draft gear, means to transmit draft from said key tosaid gear, and means to limit the movement of said key, said meanscomprising a draft `lug carryingr member and inwardly projecti-ngportions engageable by said key, said coupler butt having means coactingwith said member to prevent shearing of said key,

said last named-means comprising portions when the same is at one end ofsaid slots shearing will be prevented.

10. In combination, draft sills having slots therein, a coupler buttlocated therebetween, a key extending through said coupler butt and saidslots, and key engageable flanges at one end of said slots extendinginwardly of said sills, said coupler butt being provided with portionsextending outwardly from the sides thereof and beyond theinn'er ends ofsaid iianges and at the 0pposite side of said key With respect thereto.

In testimony whereof, l have subscribed my name.

GEORGE. o. MURRAY.

